Adptive vector quantization for image sequence coding

In this paper, new algorithms are presented for image sequence coding based upon the combination of frame replenishment and vector quantization. The results reported include both non-adaptive and adaptive vector quantization. The adaptivity is performed by replenishing the codebook according to the local statistics of the image sequence. A statistical model is used to initiate the adaptive operation. The experimental results demonstrate that good quality reconstructed image sequences at bit rate as low as 0.6 - 0.7 bits/pixel are obtained using adaptive algorithms.